Hybrid power electric car energy managing method based on synthetic energy flow

Abstract

The invention discloses a hybrid powered electric automobile energy management method based on comprehensive energy flow, which belongs to a technical field of environmental protection and energy conservation of vehicles. The system consists an electric controlling unit, a signal collecting and processing system connected with the electric controlling unit, a controlling signal outputting system, a communication controlling system of a CAN bus, a communication controlling system of serial ports, and a DC / DC power transform circuit module which is connected with each system. According to automobile running process parameters detected by each sensor, the electric controlling unit of the system calculates power required by an air conditioning compressor, a cooling fan of an engine, a power steering system and a brake system of the compressor, and then converts the power into torque additionally required by the engine; according to distribution management of driving energy of a parallel hybrid system, the system fully considers the energy consumption of fittings of the automobile, keeps the driving energy distribution more reasonable during the running process of the hybrid powered electric automobile, improves the economical efficiency of fuel of the entire automobile and obtain good engineering practical value.

Description

technical field [0001] The invention belongs to the technical fields of environmental protection and vehicle energy saving, and in particular relates to an energy management method for a hybrid electric vehicle based on comprehensive energy flow for comprehensive energy flow control and management of a hybrid electric vehicle. Background technique [0002] Hybrid electric vehicle (HEV) is considered to be one of the effective solutions to solve the oil energy crisis and environmental pollution problems faced by automobiles in this century. The complexity of HEV is far greater than that of traditional vehicles. In order to fully develop the potential of HEV, it is necessary Coordinated operation of the system. At present, the energy management strategy of domestic hybrid electric vehicles mainly focuses on the powertrain, without considering the remaining energy consumption sources in the actual vehicle system, such as air conditioning system, power steering system, brake air...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a management and control method for the comprehensive energy flow of a hybrid electric vehicle, in view of the fact that the previous hybrid electric vehicle energy management system ignores the energy consumption source of accessories, and the present invention adds an air-conditioning system compressor and an engine cooling fan The total energy consumption control module of accessory systems such as air brake system air compressor and power steering pump realizes the power distribution and management of auxiliary energy accessory systems and optimizes the energy management and control of the whole vehicle

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